Improvement in sugar-boilers



A. HAGER.

Arrangement of Kettles for Making Sugar.

Patented March 9, 1844,

Photo-Lithographer. Wathtnglon, 0.1:

UNITED, STA'rEs ABRAHAM HAGER, OF DONALDSONVILLE, LOUISIANA.

IMPROVEMENT IN SUGAR-BOILERS.

Specification forming part of Letters Patent No. 3,4'53, dated March 9, 1844.

To all whom itmay concern..-

Be it known that I, ABRAHAM Hnornn, of Donaldsonville, in the parish of Ascension, in the State of Louisiana, have invented a new and useful Improvement in Setting Kettles for Evaporating Saccharine Juices in the Mannfacture of Sugar, and for other purposes,which is described as follows, reference being had to the annexed drawings of the same, making part of this specification.

Figure 1 is a top view of the stack with the kettles in their proper places. Fig. 2 is a top of thesame, the kettles being removed in order to show parts of the flues under and around them. Fig. 3 is a vertical longitudinal section on the line 00 a: of Fig. 1. Fig. 4 is a vertical transverse section on the line 0 0 of Fig. 1. Fig. 5 is a vertical transverse section on the line 0 0 of Fig. 1.

The stack A, furnace B, ash-pit O, flues D, kettles E, chimney F, are made in the usual or most approved manner.

The main improvements consist, first, in constructing spiral fiues G beneath the grandes or clarifying-kettles E E increasing gradually in size as they wind around the kettles and approach the flue F, with a partition, H, and an enlargement of the flue at G by which a spiral draft is produced around and under the bottoms of said kettles, and a more active and intense heat and quicker draft, causing the kettles to be heated with a much smaller quantity of fuel and in less time than in the old plan, the said fines after encircling the bottoms of the kettles and diving down obliquely under them at G", and then passing off through fines Gr (shown by dotted lines) toward. the chimney F, and uniting in a single flue at G where a valve, I, is placed for opening or closingeither of said fines Gr at pleasure; second, in making said valve I and its stem or axle J hollow, and filling the same with water to take off the intcnse'heat acting on said valve, thereby preventing it from being warped or consumed; third, in constructing the bottom of the granulating-kettle K concave on the bottom surface next the fire, at K, for producing a more direct action of the heat applied to it in a circular corresponding fine, L, constructed under said kettle, which is formed with a partition, M, therein, for the purpose of preventing the heat passing to the chimney before it has circulated around and under H the surface of the concave bottom of the said granulating-kettle, whose lower edges rest upon the brick seat or bed, except at a place, L near the partition, where a space is left open for the draft to pass under the edge of the'kettle to the flue L, formed around the outside of the lating the heat applied to the same; sixth, in

the construction of man-holes S under the kettles, for removing the accumulated dirt or ashes from'under them.

The aforesaid spiral drafts or fiues under the grandes E or clarifying-kettles are produced by carrying up the brick-work of the stack to the requisite height,-where seats are formed, and then placing the bottoms of said kettles upon said seats in the brick-work and supporting the kettles in an upright position, and then continuing to carry up the brick-work, at the same time forming the circular fines G G around them to the proper size and shape, gradually increasing in size, and then running partitions across the said flues at H, so as to cause the hot air to pass around under the bottoms of the kettles to the opposite sides of the said partitions, where the aforesaid circular fines are considerably enlarged, as at G, and conducted downward in an oblique direction under the kettles G, and from thence conducted to the side of the chimney, where they unite in a single fine at G, and from thence conducted into the chimney F.

The hollow valve I, filled with water to prevent being consumed by the intensity of the heat, is made in the shape of a hollow wedge, through which at the back is passed a vertical hollow spindle, J, having a funnel-shaped mouth or top, by which it is filled with water, kept always at the requisite height by stopcock or float, or other convenient apparatus. The hollow spindle has a pivot at the lower end, and its upper end passes through the brick-work and turns therein, having the funcirculation of the heat therein.

nel top above the stack. This valve is turned to the right or left by a handle, h, for opening or closing the flues G at pleasure, more or less, for regulating the heat underthe grandes and all the kettles of the stack.

The graimlating-kettle K is made with aconcave bottom, as represented at Fig. 3, having a circular ring, 1', around its largest diameter, for strengthening it while hoisting it from its bed, and a circular rim, 1", above said ring, being a continuation of the sides of the kettle vertically above the brick-work, to prevent boiling over, having trunnions t at the sides, to which a common bail-handle is attached for suspending it by a crane or other apparatus for lifting and tilting itin discharging its contents, being provided with a handle for canting or reversing its position. The granulating-kettle rests upon a suitable seat or bed formed in the stack near the furnace.

The circular flue L under said granulatingkettle is formed in the brick-work by carrying it up at M in the center of the cavity (made to receive the kettle) above the horizontal bed, upon which the kettle rests, into the concavity or bottom of the kettle to a suiiicient height to leave a space, L, for a fine, for the proper Another fl ue, L, is then formed around the outside or convex surface of the kettle, communicating with the aforesaid flue formed in the concavity of the kettle by means of the continuation of the flue under the lower edge of the kettle at L near a partition, M, constructed in the outside flue for causing the draft to pass around the kettle before it passes to the flue N, leading to the chimney F. r

A flue, R, is constructed in the brick-work leading from the furnace B to the flue L, under the granulator K. A hinged valve, Q, is placed in this flue for letting on or shutting off the heat to or from the generator. Before hoisting the granulating-kettle from its seat or bed this valve must be closed; likewise, the slidevalve P in flue N. Y

The flue N, leading from the circular flue under the granulator to the chimney, commences near the partition M, and dives obliquely d ownward, then turns horizontally and continues in a straight line till below the grandes. It then takes a turn toward the mid die of the stack. From thence it leads to the chimney F. The slide-valve P is placed in this fiue for regulating its draft and for preventing interference with the draft of the chim ney when the granulating-kettle is raised from circular course tends also to promote an in-,

creased draft under the kettles; and causing the flues to descend under the grandes, as set forth, enables the constructer to do away with. the necessity of occupying the space around or behind the kettles in the boiling-room required for the tender of the kettles by a mass of brick-work required to admit the flu es when they are arranged above the level of the floor of the boilingroom.

A hinged spout or trough, T, is placed on the top of the stack, for conveying the boiling canejuice to the granulating-kettle. from the kettle over the furnace.

I do not claim the invention of spiral fines; but

WVha-t I do claim as my invention, and which I desire to secure by Letters Patent, is

1. The use of spiral descending fines under the grandes, as above set forth, said flues being governed by the valve I, all as set forth.

2. The arrangement of the flues L L L, in combination with the concave bottom of the granulating-kettle K, as set forth.

3. The hollow valve I, filled with water to prevent burning out, arranged and operating in the manner and for the purpose set forth.

ABRAHAM HAGER'.

Witnesses WM. P. ELLIOT, ALBERT E. J oHNsoN. 

